Novel nano-network cathodes for solid oxide fuel cells

作者：Zhao Fei; Wang Zhiyong; Liu Mingfei; Zhang Lei; Xia Changrong^*; Chen Fanglin

来源：Journal of Power Sources, 2008, 185(1): 13-18.

DOI：10.1016/j.jpowsour.2008.07.022

• Nano-network
• SM0.5Sr0.5CoO3-delta cathode
• Solid oxide fuel cells

A novel nano-network of Sm0.5Sr0.5CoO3-delta (SSC) is successfully fabricated as the cathodes for intermediate-temperature solid oxide fuel cells (SOFCs) operated at 500-600 degrees C. The cathode is composed of SSC nanowires formed from nanobeads of less than 50nm thus exhibiting high surface area and porosity, forming straight path for oxygen ion and electron transportation, resulting in high three-phase boundaries, and consequently showing remarkably high electrode performance. An anode-supported cell with the nano-network cathode demonstrates a peak power density of 0.44 W cm(-2) at 500 degrees C and displays exceptional performance with cell operating time.The result suggests a new direction to significantly improve the SOFC performance.

• 出版日期2008-10-15
• 单位中国科学技术大学